Siemens Simatic S7-300 - Page 208

Technical data of CPU 31x
7.8 CPU 319-3 PN/DP
CPU 31xC and CPU 31x, Technical Data
7-42 Manual, 01/2006 Edition, A5E00105475-06
Technical data
OBs See the Instruction List
• Size, Max.
64 Kbytes
• Number of free cycle OBs
1 (OB 1)
• Number of time-of-day-interrupt OBs
1 (OB 10)
• Number of delay interrupt OBs
2 (OB 20, 21)
• Number of cyclic interrupt OBs
4 (OB 32, 33, 34, 35)
• Number of process interrupt OBs
1 (OB 40)
• Number of DPV1-interrupt OBs (only DP-
CPUs)
3 (OB 55, 56, 57)
• Number of synchrononous cycle interrupt OBs
1 (OB 61)
• Number of asynchronous error interrupts
6 (OB 80, 82, 83, 85, 86, 87)
(OB83 only for PN IO)
• Number of startup OBs
1 (OB 100)
• Number of synchronous error interrupt OBs
2 (OB 121, 122)
Nesting depth
• Per priority class
16
• Additional within an error OB
4
FBs See the Instruction List
• Number, Max.
2048
(in 0 to 2047 range of numbers)
• Size
64 Kbytes
FCs See the Instruction List
• Number, Max.
2048
(in 0 to 2047 range of numbers)
• Size
64 Kbytes
Address areas (I/O)
Total I/O address area
• Inputs
8 Kbytes
• Outputs
8 Kbytes
• Distributed
– Inputs
– Outputs
8 KB
8 KB
Number of sub-process diagrams 1
I/O process image
• Inputs, configurable
2048 bytes
• Outputs, configurable
2048 bytes
• Inputs, default
256 bytes
• Outputs, default
256 bytes
Digital channels
• Inputs
65536
• Outputs
65536
• Inputs, central
1024
• Outputs, central
1024